Oil-burner.



J. B. COWPER.

OIL BURNER.

APPLICATION FILED MAR.28, 1911.

1,029,048, I Patented June 11, 1912.

2 SHEETS-SHEET 1.

111111115515 I @)Al7l/I,/' Wu 1 a Y 4 Jnormys J. B. OOWPER.

OIL BURNER.

APPLICATION FILED MAR.Z8, 1011.

Patented June 11, 1912.

2 SHEETS-SHEET 2.

(Incl-lugs JOHN B. COWPER, OF BAYONNE, NEW

I OIL-BURNER.

Specification of Letters Patent.

Patented June 11, 1912.

Application filed March 28, 1911. Serial No. 617,365.

T 0 all whom it may concern:

Be it' known thatI, JOHN B. GowrnR, a citizen of the United States, residing at Bayonne, in the county of Hudson and. State of New Jersey, have invented new and useful Improvements in Oil-Burners, of which the following is a specification.

My invention relates to oil burners and particularly to that class of burners in which the heavier hydrocarbon oils are used and burned in the form of a spray consisting of an admixture of the oil with a suitable gaseous material, such, for example, as steam or air under pressure.

The general object of the invention is to improve the construction and operation of side elevation, Fig

such burners with a View to'economy and simplicity of construction, complete atomization, ease of assemblage, dismantling and renewal of parts, and general effectiveness.

A particular object of the invention is to provide a burner of this class in which the complete admixture of the oil and air or steam escape of either from the nozzle as a separate unmixed element is absolutely prevented.

With these and other objects in view, the invention consists in the improved construction, arrangement and combination of the parts of a burner of this class which will be hereinafter fully described, the particular points ofnovelty being specifically set.

forth in the subjoined claims.

I have illustrated a preferred embodiment of my invention in the accompanying drawings in which- Figure 1 represents the compete burner in 2 represents the same in ongitudinal section, Fig. j

central, vertical, 3 represents the burner in end elevation, Fig. 4 represents the oil pipe and spraying nozzle, in side elevation, removed from the casing, Fi 5 represents a sectional view on the plane indicated by the broken line lar to that of Fig. 5, the plane being indicated by the broken line 66 of 4.

Like reference characters mark the same parts wherever they occur in the various I trem ties, they are transversely serrated,

figures of the draw s. Referring specifica y to the drawings 10 indicates the main body or casing 0 on, both, is absolutely assured and the the block terminati 5-5 j of Fig. 4, and Fig. 6 represents a view simi- F the burner which is ofany ordinary or approved construction and to which is removl ably secured a nozzle 11, the inner end of;

the nozzle being preferably reduced and provided with exteriorthreads on its reduced-inner end to engage interior threads in the casing, although this connection might be made in any other approved manner, or the casing and nozzle mi ht be integral although this would be disadvantageous for the purposes of the burner.

At the inner end of the casing 10 there is. secured in any approved manner, preferably by threading it on the end of the casing, a T pipe-fitting 12 into the lateral branch 13 of which is threaded a sleeve 14 receiving in. its turn a second threaded sleeve 15 which in turn'receives the end of a pipe 16 for the supply of suitable gaseous material, as steam or air underpressure from any suitable source. The air may be su erheated if desired. The inner branch 1 of the fitting 12 is threaded on the'casing 10, as before mentioned, while the outer branch 18 which is in alinement with the inner branch 17, and is of slightly less interior diameter, is'interiorly threaded to receive a threaded sleeve 19 which in turn receives a second threaded sleeve 20, inside of which sprayer, as will be later described. This sprayer-block is recessed centrally in its inner end, as at 23, and the walls of said recess are threaded to receive the inner end of the oil pipe 21. This pipe does not reach the inner end of the recess but leaves the inner portion unoccupied to providea chamber, as 24. The sprayer-block 22 snugly fits in the interior of the .nozzle and has, formed in its outer surface, a series of spiral ooves 25 extending from end to end of outwardly at the discharge end as clear y shown in Figs. 2,

'3 and 4. From the bottom of each of the spiral grooves 25 a radial bore,as at 26, extends into the inner chamber 24 and the bottoms of the spiral grooves, from their inner ends to the bores 26 are smooth as at 27 while from these bores to their outer extoothed, cross-ribbed or grooved, or otherwise roughened as. shown at 28. The spiral grooves are of com aratively short pitch, being given preferab y a complete turn from one end to the other of the block.

25 and passes rapidly through them, commingling with and thoroughly atomizing the oil and forcing the atomized oil out at the extremity of the nozzle to be burned.

The passage of the steam or air into the gooves. 25is unimpeded until the'bores' 26 are reached owing to the smooth finish of the walls of the grooves at these points but when v the mixture of the steam or air with the oil begins at these points, the oil is forced rapidly over the transversely serrated or otherwise roughened walls of the grooves and is thus effectually and thoroughly intermixed, broken up, and atomized before it reaches the exit.

The comparatively short pitch of the spiral grooves assures a spiral movement to the commingled oil and steam or air and causes it to be discharged in a swirl thus spreadingit so as to more effectually provide for its proper combustion. The snug fit of the sprayer block in the nozzle assures also an indivldual supply of air or steam to each groove entirely independent ofany other operation, of the burner.

The pipe fittings may be of ordinary construction, as well as the threaded sleeves, the uses of which will bereadily understood at a glance," one of the principal functions being to assure the perfect seating of the sprayer block in the nozzle, and many variations may be made from the specific constructions shown and. described, without departing from the spirit and scope of the invention.

Having thus fully described my invention, what I claim as new is 1. 'A' burner of the character described comprising a nozzle, a sprayer-block snugly fitted into the interior of the nozzle having an oil channel, and provided with spiral grooves 1n its outer surface, and means'for providing each groove with an individual,

independent supply of oil intermediate of its ends and from the channel.

2. A burner of the character described comprising a nozzle, a sprayer-block snugly fitted into the interior of the nozzle having an oil channel, and'provided with-continuous spiral grooves in its outer surface, means for providing each groove with an individual, independent supply of oil intermediate.

of its ends and from the channel, and means for providing each groove also with a supply of gaseous material.

oove and thus facilitates the proper.

comprising a nozzle,

3.. A burner of the character described, comprising a nozzle, an elongated frustoconical sprayer block snugly fitted into the interior of the nozzle and provided with continuous spiral grooves, in its outer surface, said sprayer block also having an interior chamber'and radial bores communicating independently between the chamber and each groove at a point intermediate the ends of the latter.

4. A burner of the character described, comprising a nozzle and a sprayer block snugly fitted into the nozzle, one of said parts having its surface provided with a plurality of separated grooves each of which extends spirally around the block, said block having a chamber and being provided with conduits through which the chamber has communication with the spiral grooves intermediate of the ends of the latter, the burner also having means whereby liquid fuel and ajgaseous material are delivered to the chamber and the inner ends of the spiral grooves, respectively.

5. A burner of the character described, comprising a nozzle, a sprayer. block of gradually decreasing diameter from its rear to its forward end, snugly fitted in said nozzle and formed exteriorly with a plurality of separated grooves each of which extends s'plrally around the same from the rear end to the front end thereof, the burner also having means through which gaseous material is supplied to the rear end of each of the grooves and means through which the interior of the block is supplied with liquid fuel, and said block having bores through which the liquid-fuel is delivered to the grooves intermediate of the ends of the latter.

6. A burner of the character described comprising a nozzle, a sprayer-block snugly fitted into the interior of the nozzle, and provided with. spiral grooves in its outer surface, the walls of the grooves being roughened.

' 7. A burner of the character described I a sprayer-block snugly fitted into the nozzle having spiral grooves in its outer'surface and provided with an oil channel, and means for supplying each groove independently from said channel with a supply of oil at points intermediate its ends, each groove having its walls roughened. Y

8. A burner of. the character described comprising a nozzle, a sprayer-block snugly fittedinto the interior of the nozzle and provided with spiral grooves in its outer surface and with bores leading to said grooves, the walls of the grooves being roughened from said bores to their outer ends.

9. A burner'of the character described, comprising a nozzle ;and a sprayer block snugly fitted into the nozzle, one of said parts having its surface provided plurality of separated grooves each of which extends spirally n around the block, said burner alsohaving a channel and the block having separated bores channel has communication w th the spiral grooves intermediate of the ends of the lat- 'ter, the walls of said groovesbeing rough ened from the outer ends of the bores to the discharge endsof the grooves and smooth from said outlet ends of the bores to the entrance ends of the grooves, and means through which fuel and a gaseous material are delivered to said channel ,and the entrance ends of the grooves, respectively.

10. A burner of the character described, comprising a .nozzle, a frustoconical sprayer-block snugly fitted into the intewith a through which the:

the grooves being roughenedfrom said bores to their outer ends and smooth from said bores'to their inner ends, and means for delivering fuel to the inlet ends of the bores and a gaseous medium to the entrance ends of the grooves, respectively.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

JOHN B. COWPER.

Witnesses:

CHAS. E. ANNETT,

BERTRAM CUBBEBLING. 

